Abstract
The morphology of a plant is not predestined during embryonic development and its myriad branching architecture is post-embryonically determined by axillary meristem (AM) activity as the plant adapts to a varying environment. The shoot apical meristem produced during embryonic development repetitively gives rise to a phytomer that comprises a leaf, an AM, and an internode. The final aerial architecture is regulated by shoot branching patterns derived from AM activity. These branching patterns are modulated by two processes: AM formation and axillary bud outgrowth. Several transcription factors (TFs) that regulate these processes have been identified. Various plant hormones, including strigolactones and auxin, have major roles in controlling these TFs. In this review we focus on molecular mechanisms that guide AM initiation and axillary bud growth, using rice as our main species of emphasis.
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Wai, A.H., An, G. Axillary meristem initiation and bud growth in rice. J. Plant Biol. 60, 440–451 (2017). https://doi.org/10.1007/s12374-017-0088-x
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DOI: https://doi.org/10.1007/s12374-017-0088-x